capehank - As Biker1 and Cowboy 66 mention you should not have any problems towing a smaller car. I pull a trailer with a full dress motorcycle almost every trip. Have to keep checking my mirrors to be sure it is still back there. The limit Biker1 refers to on the Trail-Lite is likely the rating of the hitch. The Chevy chassis has a GVWR rating of 12,300 lbs (maximum that the unit should weigh) and a GCWR of 16,000 lbs (maximum that the unit plus the towed should weigh). This leaves you with 3,700 lbs for the towed. However, since my unit weighs in at around 9,000 lbs ready to go I still have a capacity of around 7,000 lbs for the towed. I am, however, limited by my hitch to 5,000 lbs.
I think the year of manufacture and/or model of unit determined whether you have a 3,500 lb or 5,000 lb hitch.